e-journal

Morphology and Ultrastructure of the Somatic Cells in Astacus leptodactylus Ovary

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We defined the somatic environment in which female germinal cells develop, and performed ultrastructural
analyses of various somatic cell types, with particular reference to muscle cells and follicle cells, that
reside within the ovary at different stages of oogenesis. Our findings show that ovarian wall of the crayfish is
composed of long muscle cells, blood cells, blood vessels and hemal sinuses. The follicle and germinal cells lie
within a common compartment of ovarian follicles that is defined by a continuous basal matrix. The follicle cells
form branching cords and migrate to surround the developing oocytes. A thick basal matrix separates the ovarian
interstitium from ovarian follicles compartment. Transmission electron microscopy shows that inner layer of
basal matrix invaginates deeply into the ovarian compartment. Our results suggest that before being surrounded
by follicle cells to form follicles, oogonia and early previtellogenic oocytes reside within a niche surrounded by a
basal matrix that separates them from ovarian interstitium. We found coated pits and coated vesicles in the cortical
cytoplasm of previtellogenic and vitellogenic oocytes,suggesting the receptor mediated endocytosis for transfer
of material from the outside of the oocytes, via follicle cells. The interstitial compartment between the inner
muscular layer of the ovarian wall and the basal matrix of the ovarian follicle compartment contains muscle cells,
hemal sinuses, blood vessels and blood cells. Granular hemocytes, within and outside the vessels, were the most
abundant cell population in the ovarian interstitium of crayfish after spawning and in the immature ovary.

. KEY WORDS: crayfish ovary; ovarian wall; muscle cells;follicle cells; basal matrix

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Ketersediaan

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Informasi Detail

Judul Seri

Journal Of Morphology

No. Panggil

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Penerbit

: Wiley Periodicals., 2016

Deskripsi Fisik

Journal Of Morphology 277:118–127 (2016)

Bahasa

English

ISBN/ISSN

DOI 10.1002/jmor.204

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

BIOLOGI

Info Detail Spesifik

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Pernyataan Tanggungjawab

Wati/Agus

Versi lain/terkait

Lampiran Berkas

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